What is Income from Business and Profession

If I am self-employed, doing any business, small or big, from a kirana store or a sweet shop or vendor, to a big multinational, I fall, rather rise, in the category of business. Similarly, I may have a professional expertise or degree, and doing my own practice or earning from such profession. Like a lawyer, a doctor, a film artist, an architect or an accountant. So, I fall again in Business Profession category.